# Fixed Mask Not Working as Expected

**URL:** <https://discourse.itk.org/t/fixed-mask-not-working-as-expected/1238>\
**Category:** Engineering\
**Tags:** registration\
**Created:** [August 30, 2018, 7:49pm UTC](https://discourse.itk.org/t/fixed-mask-not-working-as-expected/1238 "2018-08-30T19:49:08Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![dzenanz](https://discourse.itk.org/user_avatar/discourse.itk.org/dzenanz/32/1093_2.png) [@dzenanz](https://discourse.itk.org/u/dzenanz)\
**Post date:** [August 31, 2018, 1:56pm UTC](https://discourse.itk.org/t/fixed-mask-not-working-as-expected/1238/3 "2018-08-31T13:56:46Z")

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There was a [discussion](https://discourse.itk.org/t/mattesmutualinformationimagetoimagemetricv4-sampling-heuristics/1140) about this or something very similar in July. And it resulted in a [patch](http://review.source.kitware.com/#/c/23580/) which was merged.

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_[View the full topic](https://discourse.itk.org/t/fixed-mask-not-working-as-expected/1238)._